R1:c81592bf5c9c

Remove messages from Conpherence mobile-menu

Summary: These never looked right, and with the revised mobile design, shouldn't be needed.

Test Plan: iOS, Chrome

Reviewers: epriestley, btrahan

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D5426